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Photosynthesis

Photosynthesis. Please copy this in your Notebook. The last 2 slides should be on the left side of your notebook. Photosynthesis. When I plant a seed that weighs 1 gram, how does it grow into a huge sequioa tree which weighs tons? Where does the extra weight come from? The soil? The water?

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Photosynthesis

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  1. Photosynthesis Please copy this in your Notebook. The last 2 slides should be on the left side of your notebook

  2. Photosynthesis • When I plant a seed that weighs 1 gram, how does it grow into a huge sequioa tree which weighs tons? • Where does the extra weight come from? The soil? The water? • Dutch Physician Jan Van Helmont • Soil weighed constantly 75 grams • Water was the only thing he added • Joseph Priestley • Observed a plant keep a flame alive underneath a glass dome • Jan Ingenhousz figured out that plants produce oxygen in light • Photosynthesis • Plants convert the energy of sunlight into the energy in the chemical bonds of carbohydrates

  3. Requirements for Photosynthesis • Sunlight – different wavelengths of visible light are needed for photosynthesis • Carbon dioxide • Water • Pigments– absorb the specific wavelengths (colors) from light • Chlorophyll is the primary pigment in plants. • Energy storing compounds • ATP (adenosine triphosphate) – power currency of the cell

  4. “Simplified” EQUATIONFORPHOTOSYNTHESIS Energy (Light) 6CO2 + 6H2O + C6H12O6 + 6O2 CARBON DIOXIDE GLUCOSE OXYGEN WATER

  5. Photosynthesis: Reactants and Products Light Energy Chloroplast CO2 + H2O Sugars + O2 Go to Section:

  6. H2O CO2 Sugars O2 Photosynthesis Overview Light Chloroplast NADP+ Chloroplast ADP + P Light- Dependent Reactions Calvin Cycle ATP NADPH

  7. Fill in the Boxes below. Light Reactions (Light dependent) Dark Reactions (Light independent) light, ADP, NADP+, H2O ATP, NADPH, CO2 What you need glucose, ADP, NADP+ ATP, NADPH, O2, H+ What you get

  8. Photosynthesis + H2O CO2 Energy ATP and NADPH2 Water is broken Light is Adsorbed By Chlorophyll ADP NADP Calvin Cycle Chloroplast Used Energy and is recycled. O2 + C6H12O6 Light Reaction Dark Reaction

  9. Light- dependent reactions Calvin cycle Energy from sunlight Thylakoid membranes ATP Stroma NADPH High-energy sugars ATP NADPH O2 Chloroplasts Concept Map Photosynthesis includes takes place in uses use take place in to produce to produce of Go to Section:

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